/*
 * Copyright 2009 Tran Nhut Trung.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */
package org.eclipse.core.databinding.observable.gwt.internal;

import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.TextBoxBase;

import org.eclipse.core.databinding.observable.Realm;


public class TextBoxObservableValue extends WidgetPropertyObservableValue {
  private TextBoxBase text;
  private ValueChangeHandler valueChangeHandler = new ValueChangeHandler(){
    public void onValueChange(ValueChangeEvent event) {
      processUpdate(text.getText());
    }
  };
  private HandlerRegistration valueChangeHandlerRegistration;
  
  public TextBoxObservableValue(TextBoxBase text) {
    this(Realm.getDefault(), text);
  }
  public TextBoxObservableValue(Realm realm, TextBoxBase text) {
    super(realm, text, "value");
    
    this.text = text;
    
    valueChangeHandlerRegistration = text.addValueChangeHandler(valueChangeHandler);
  }

  public synchronized void dispose() {
    super.dispose();
    
    valueChangeHandlerRegistration.removeHandler();
  }
}
